National Research Council (U.S.). Panel to Review the Status of Basic Research on School-Age Children, ebrary, Inc, & Collins, W. A. (1984). Development during middle childhood: The years from six to twelve. National Academy Press.
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Chicago-čujuhus (17. p.)
National Research Council (U.S.). Panel to Review the Status of Basic Research on School-Age Children, Inc ebrary, juo W. Andrew Collins. Development During Middle Childhood: The Years from Six to Twelve. Washington, D.C.: National Academy Press, 1984.
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MLA-čujuhus (9. p.)
National Research Council (U.S.). Panel to Review the Status of Basic Research on School-Age Children, et al. Development During Middle Childhood: The Years from Six to Twelve. National Academy Press, 1984.
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